The ability to withstand short-term heat shocks and long-term elevated ambient temperatures suggests different sensitivity to future climatic changes for two sympatric Mediterranean land snail species, Theba pisana and Xeropicta derbentina (Helicoidea)

In the 1940s, Xeropicta derbentina was introduced to the Provence region in south-eastern France. Since then, it has coexisted sympatrically with the native species Theba pisana. X. derbentina's successful establishment in Provence is commonly attributed to the hot and dry climate there. In